[BlobAsync] Moving async handling into BlobStorageContext & quota out.

content/child/blob_storage/blob_transport_controller.h

Index: content/child/blob_storage/blob_transport_controller.h
diff --git a/content/child/blob_storage/blob_transport_controller.h b/content/child/blob_storage/blob_transport_controller.h
index 4f06418bd7d273056297868a04a5ae893318697e..a3065ec4bca02f0b7ae4c574b79f30e4d4703683 100644
--- a/content/child/blob_storage/blob_transport_controller.h
+++ b/content/child/blob_storage/blob_transport_controller.h
@@ -19,6 +19,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/shared_memory_handle.h"
 #include "base/memory/weak_ptr.h"
+#include "base/optional.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_platform_file.h"
 #include "storage/common/blob_storage/blob_storage_constants.h"
@@ -87,10 +88,7 @@ class CONTENT_EXPORT BlobTransportController {
       base::TaskRunner* file_runner,
       IPC::Sender* sender);
 
-  void OnCancel(const std::string& uuid,
-                storage::IPCBlobCreationCancelCode code);
-
-  void OnDone(const std::string& uuid);
+  void OnBlobFinalStatus(const std::string& uuid, storage::BlobStatus code);
 
   bool IsTransporting(const std::string& uuid) {
     return blob_storage_.find(uuid) != blob_storage_.end();
@@ -127,8 +125,8 @@ class CONTENT_EXPORT BlobTransportController {
   void OnFileWriteComplete(
       IPC::Sender* sender,
       const std::string& uuid,
-      const std::pair<std::vector<storage::BlobItemBytesResponse>,
-                      storage::IPCBlobCreationCancelCode>& result);
+      const base::Optional<std::vector<storage::BlobItemBytesResponse>>&
+          result);
 
   void StoreBlobDataForRequests(
       const std::string& uuid,